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University of California Publications. | Geology 



Sphenophalos, though it may represent the twisted-horned form 

 Ilingoceros, It shows a stage of evolution tending toward the 

 Antilocapra type, but a little less advanced than in that genus. 



Measurement of Teeth of A\telope-Like Forms Eeferred in Part 



to Sphexophalos 



Cap row eryx Ant ilocap ra 



M„ anteroposterior diameter 9.3 mm. 12.7 



Mi, transverse diameter 5.1 6.7 



No. 12604 



M 2 , anteroposterior diameter 14.7 11.0 14.7 



No. 12612 



13. 

 No. 12604 



M = , transverse diameter 6.9 7.7 



No. 12 612 



6.2 



M 3 , anteroposterior diameter 16.5 24. 



M 3 , transverse diameter 5.6 8. 



No. 12613 



M 1 , anteroposterior diameter 12.1 13.5 



No. 12603 



11.7 



No. 12613 



M 1 , transverse diameter S.4 10.1 



No. 12603 



9. 



No. 12605 



M 2 , anteroposterior diameter 1 4. 15.4 



No. 12605 



M-, transverse diameter 8.5 10.3 



No. 12611 



M\ anteroposterior diameter 17.5ct 17. 



No. 12610 



17. 



No. 12611 



M 3 , transverse diameter 10.5 10.1 



No. 12610 



10.3 



No. 12613 



Anterior side P 3 to posterior side M 1 30.8 31.5 



P 3 , anteroposterior diameter 8.4 10. 



P 3 , transverse diameter 4.8 6. 



P 4 , anteroposterior diameter 10.4 10.2 



P 4 , transverse diameter 6.7 7.5 



M 1 , anteroposterior diameter 12.1 13.5 



M 1 , transverse diameter 8.4 10.1 



a, approximate. 



